Hi Wexfordian,
I am in the same boat, with a sub-prime lender. My rate is not too bad at the moment but with rates to fluctuate I am worrying as there are no published variable rates (they choose the rates on a case by case basis) as the prime lenders have.
6.8% seems very high (what is your rate at the moment), have you missed any payments recently?
After a few years of being with a sub-prime lender and proving that risk factors are low with their customers I feel there should be a Standard rate, it really worries me as as my mortgage is not small and while I am not in trouble now a 2% increase will be a completely different ballgame for us.